Quick cutter replacing device of numerically controlled lathe

Abstract

The utility model relates to the technical field of numerical control lathes, and discloses a quick cutter replacing device of a numerical control lathe, which comprises a connecting seat, an assembling sleeve is arranged on one side of the connecting seat, a cutter is detachably sleeved on the outer surface of the assembling sleeve, a movable shaft is arranged in the middle of the interior of the assembling sleeve, and two ends of the movable shaft are rotatably connected with the assembling sleeve through bearings respectively; a driving assembly used for driving the movable shaft to rotate is arranged at one end of the movable shaft, an extrusion block is installed on the outer surface of the movable shaft in a spiral transmission mode, a plurality of through holes are formed in the outer surface of the assembling sleeve in the circumferential direction at equal intervals, limiting rods slidably penetrate through the through holes correspondingly, and one ends of the limiting rods penetrate into the assembling sleeve to be provided with rolling wheels making contact with the extrusion block. A spring fixedly sleeves the outer side of the assembly sleeve, the other end of the spring is fixedly connected with the side wall of the assembly sleeve, and the cutter is composed of a cutter holder and a cutter body. According to the rapid cutter replacing device of the numerical control lathe, the cutter can be rapidly installed, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] This application relates to the field of CNC lathe technology, and in particular to a quick tool change device for a CNC lathe. Background Technology

[0002] CNC lathes are among the most widely used CNC machine tools. They are mainly used for cutting the inner and outer cylindrical surfaces, inner and outer conical surfaces with arbitrary cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads of shaft or disc parts. They can also perform grooving, drilling, reaming, boring, and other machining operations.

[0003] In the process of fixing tools, most existing fixing devices use multiple sets of bolts to lock them to the connecting seat. However, fixing with bolts requires the operator to rotate multiple sets of bolts, which makes the tool disassembly and assembly process time-consuming and reduces the efficiency of tool replacement. Utility Model Content

[0004] To address the problem that existing tool-fixing devices typically use multiple sets of bolts to lock the tool to the connecting seat, which requires operators to rotate these bolts and makes tool replacement time-consuming and inefficient, this application provides a quick tool change device for CNC lathes.

[0005] The quick tool changing device for a CNC lathe provided in this application adopts the following technical solution:

[0006] A quick-change tool device for a CNC lathe includes a connecting seat, an assembly set on one side of the connecting seat, a tool detachably mounted on the outer surface of the assembly set, a movable shaft in the middle of the assembly set, both ends of the movable shaft being rotatably connected to the assembly set via bearings, a drive assembly for rotating the movable shaft at one end of the movable shaft, a pressing block being helically mounted on the outer surface of the movable shaft, multiple through holes evenly spaced circumferentially on the outer surface of the assembly set, each through hole having a limit rod slidingly passing through it, one end of the limit rod passing through a roller in contact with the pressing block inside the assembly set, and a spring being fixedly mounted on its outer side, the other end of the spring being fixedly connected to the side wall of the assembly set, the tool consisting of a tool holder and a tool body, an assembly groove matching the assembly set in the middle of the tool holder, and multiple limiting holes matching the limit rods evenly spaced circumferentially on the assembly groove.

[0007] Preferably, the extrusion block has a frustum-shaped structure, and guide blocks are provided on both sides of one end. The inner sidewall of the assembly is provided with guide grooves that match the guide blocks. The guide blocks are slidably installed in the guide grooves.

[0008] Preferably, the drive assembly includes a worm gear fixedly sleeved on one end of the movable shaft, a worm gear meshing with and driving one side of the worm gear, one end of the worm gear being rotatably connected to the inner wall of the assembly, and the other end extending through to the outside of the assembly and fixed with a knob.

[0009] Preferably, a threaded groove is formed on the outer surface of one end of the movable shaft, and a threaded hole matching the threaded groove is formed inside the extrusion block.

[0010] Preferably, the outer surfaces of the assembly and the tool holder are respectively provided with installation marks.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The quick tool changer of this CNC lathe can quickly install and remove tools. When disassembling, the movable shaft can be rotated in the opposite direction, causing the extrusion block to move away from the extrusion roller. At this time, the spring returns to its original elasticity, thereby causing the limit rod to retract into the assembly, so that the tool holder can be removed and the tool can be disassembled. The structure is simple and the operation is convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the entire assembly in this utility model;

[0015] Figure 3 This is a front view of the limiting rod in the assembly of this utility model being moved out of the enclosure.

[0016] Explanation of reference numerals in the attached drawings: 1. Connecting seat; 2. Assembly set; 3. Movable shaft; 4. Extrusion block; 5. Limiting rod; 6. Roller; 7. Spring; 8. Tool holder; 9. Tool body; 10. Limiting hole; 11. Guide block; 12. Worm gear; 13. Worm; 14. Knob; 15. Installation mark. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1 to 3 This utility model provides a technical solution:

[0019] A quick tool changing device for a CNC lathe includes a connecting seat 1, a mounting set 2 on one side of the connecting seat 1, a tool detachably mounted on the outer surface of the mounting set 2, a movable shaft 3 in the middle of the mounting set 2, the two ends of the movable shaft 3 being rotatably connected to the mounting set 2 via bearings, a drive assembly for rotating the movable shaft 3 at one end, a pressing block 4 being helically mounted on the outer surface of the movable shaft 3, multiple through holes equally spaced in the circumferential direction on the outer surface of the mounting set 2, limit rods 5 slidingly passing through the through holes, one end of the limit rod 5 passing through the mounting set 2 and a roller 6 in contact with the pressing block 4, and a spring 7 fixedly mounted on the outer side, the other end of the spring 7 being fixedly connected to the side wall of the mounting set 2, the tool consisting of a tool holder 8 and a tool body 9, an assembly groove matching the mounting set being opened in the middle of the tool holder 8, and multiple limiting holes 10 matching the limit rods 5 being equally spaced in the circumferential direction of the assembly groove.

[0020] During installation, first align the mounting slot on the tool holder 8 with the mounting accessory 2, then slip it onto the outside of the mounting accessory 2. Next, adjust the drive assembly to rotate the movable shaft 3, causing the pressing block 4, which is helically mounted on the outer surface of the movable shaft 3, to move linearly outside the movable shaft 3. The pressing block 4, with its inclined outer surface, presses against the roller 6, thereby simultaneously pressing the limiting rod 5 to move outward towards the mounting accessory 2. At the same time, it presses the spring 7, causing multiple limiting rods 5 to pass through the through holes and insert into the limiting holes 10 in the mounting slot on the tool holder 8, thus achieving quick and secure installation. Similarly, when disassembly is required, the movable shaft 3 can be rotated in the opposite direction, causing the pressing block 4 to move and stop pressing the roller 6. At this time, the spring 7 returns to its elasticity, causing the limiting rod 5 to retract into the mounting accessory 2, allowing the tool holder 8 to be removed and the tool to be disassembled as a whole. The structure is simple and the operation is convenient.

[0021] The extrusion block 4 adopts a frustum-shaped structure, and guide blocks 11 are provided on both sides of one end. The inner side wall of the assembly 2 is provided with guide grooves that match the guide blocks 11. The guide blocks 11 are slidably installed in the guide grooves. The extrusion block 4 adopts a frustum-shaped structure, which makes its outer surface inclined, so as to cooperate with the movement of the extrusion limiting rod 5. When the extrusion block 4 moves, it drives the guide blocks 11 to move in the guide grooves, which plays a guiding and limiting role.

[0022] The drive assembly includes a worm gear 12 fixedly sleeved on one end of the movable shaft 3. A worm 13 is meshed and driven on one side of the worm gear 12. One end of the worm 13 is rotatably connected to the inner wall of the assembly 2, and the other end extends through to the outside of the assembly 2 and is fixed with a knob 14. During installation, the worm 13 can be rotated by the knob 14, thereby driving the worm gear 12 and the movable shaft 3 to rotate synchronously.

[0023] The outer surface of one end of the movable shaft 3 is provided with a threaded groove, and the inside of the extrusion block 4 is provided with a threaded hole that matches the threaded groove. When the movable shaft 3 rotates, it can drive the extrusion block 4 to make linear motion outside the movable shaft 3.

[0024] The outer surfaces of the fitting 2 and the tool holder 8 are respectively provided with installation marks 15. During installation, the installation marks 15 on the outer surface of the tool holder 8 are aligned with the installation marks 15 on the outer surface of the fitting 2, and then the fitting is put on the outside of the fitting 2. At this time, when the limiting rod 5 moves outward, it can be inserted into the limiting hole in the mounting groove on the tool holder 8, which facilitates the installation.

[0025] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0026] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0027] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick tool changer for a CNC lathe, characterized in that: The assembly includes a connecting seat (1), a mounting set (2) is provided on one side of the connecting seat (1), a cutter is detachably mounted on the outer surface of the mounting set (2), a movable shaft (3) is provided in the middle of the mounting set (2), the two ends of the movable shaft (3) are rotatably connected to the mounting set (2) through bearings, a drive assembly for driving the movable shaft (3) to rotate is provided at one end of the movable shaft (3), a pressing block (4) is helically mounted on the outer surface of the movable shaft (3), and the outer surface of the mounting set (2) is circumferentially spaced with equal intervals. Multiple through holes, each through hole has a limiting rod (5) that slides through it. One end of the limiting rod (5) passes through the assembly (2) and is provided with a roller (6) that contacts the extrusion block (4). A spring (7) is fixedly sleeved on the outside of the roller (6). The other end of the spring (7) is fixedly connected to the side wall of the assembly (2). The cutting tool consists of a tool holder (8) and a tool body (9). The tool holder (8) has an assembly groove in the middle that matches the assembly. The assembly groove has multiple limiting holes (10) that match the limiting rod (5) at equal intervals in the circumferential direction.

2. The tool changing device for a CNC lathe according to claim 1, characterized in that: The extrusion block (4) adopts a frustum-shaped structure, and guide blocks (11) are provided on both sides of one end. The inner sidewall of the assembly (2) is provided with guide grooves that match the guide blocks (11), and the guide blocks (11) are slidably installed in the guide grooves.

3. The tool changing device for a CNC lathe according to claim 2, characterized in that: The drive assembly includes a worm gear (12) fixedly sleeved on one end of the movable shaft (3), and a worm (13) meshing and driving on one side of the worm gear (12). One end of the worm (13) is rotatably connected to the inner wall of the assembly (2), and the other end extends through to the outside of the assembly (2) and is fixed with a knob (14).

4. The tool changing device for a CNC lathe according to claim 3, characterized in that: The outer surface of one end of the movable shaft (3) is provided with a threaded groove, and the inside of the extrusion block (4) is provided with a threaded hole that matches the threaded groove.

5. The tool changing device for a CNC lathe according to claim 4, characterized in that: The outer surfaces of the assembly (2) and the tool holder (8) are respectively provided with installation marks (15).

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